19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is a disproportionation reaction? (a) Cu O 2H Cu Cu H O -> (b) 2CrO 2H Cr O H O -> (c) CaCO 2H Ca H O CO -> (d) Cr O 2O H 2CrO H O -> Ans (a) Sol. A chemical reaction in whic…
The oxidation number of carbon in CH2Cl2 is
Nitrogen show different oxidation states in the range
Oxidation number of Cl in CaOCl2 (bleaching powder) is
The oxidation number of Pr in Pr6O11 is
The oxidation number of P in Mg2P2O7 is
The oxidation number S in Na2S4O6 is
An element that never has a positive oxidation state in any of its
The oxidant which cannot act as a reducing agent is
In which of the following processes is nitrogen oxidized? (a) NH N -> (b) NO NO -> (c) NO NO -> (d) NO NH -> Ans (a) Sol. o NH N -> Oxidation state of N = -3 Oxidation state of N = 0 In the other reaction, the oxid…
The oxidation number of C in HNC is
The oxidation state of Fe in Fe3O8 is
Which one of the following reaction involves oxidation- reduction?
The oxidation number of C in CH2O is
Oxidation number of carbon in CCl is :
The oxidation states of the most electronegative elements in the products of the reaction between BaO2 and H2SO4 are
The oxidation state of C in diamond is
In which of the following compounds is the oxidation state of C highest?
In which of the following compounds is the oxidation state of C a fraction?
In which of the following compounds, the oxidation number of iodine is fractional?
In which of the compounds does manganese exhibit highest oxidation number?
In which of the following pairs is there the greatest difference is the oxidation numbers of the oxidation numbers of the central atom?
In which of the following cases is the oxidation state of N atom wrongly calculated?
In which of the following pairs is there the greatest difference in the oxidation numbers of the underlined elements?
In which of the following is the highest oxidation state not possible?